Introduction: TSCA Section 6(h) Is Now a Product Data Challenge

TSCA Section 6(h) compliance is no longer only a legal or chemical management topic. For companies selling, importing, manufacturing, or distributing products in the United States, it has become a supply chain data, supplier evidence, article-level assessment, and documentation challenge.

Under Section 6(h) of the Toxic Substances Control Act, the U.S. Environmental Protection Agency has taken action on certain persistent, bioaccumulative, and toxic chemicals, known as PBT chemicals. EPA explains that these substances can build up in the environment over time and may create potential risks for exposed populations, including consumers, commercial users, workers, children, tribes, and subsistence fishers.

For businesses, the key question is practical:

Do any of our products, components, materials, mixtures, replacement parts, or imported articles contain restricted PBT chemicals under TSCA Section 6(h)?

Answering this question requires more than a one-time supplier email. It requires reliable product data, supplier declarations, material information, concentration evidence, SDS review, article-level assessment, and clear documentation.

What Is TSCA Section 6(h)?

TSCA Section 6(h) requires EPA to take expedited action on certain PBT chemicals to reduce exposure to the extent practicable. EPA also states that no separate risk evaluation is required for these chemicals under this provision.

The regulatory requirements are found in 40 CFR Part 751, Subpart E, which establishes prohibitions and restrictions on the manufacturing, processing, and distribution in commerce of persistent, bioaccumulative, and toxic chemicals under TSCA Section 6(h).

In practice, TSCA Section 6(h) can affect companies that:

Manufacture chemicals, mixtures, materials, or finished products
Import products, components, or articles into the United States
Process or distribute articles that may contain restricted PBT chemicals
Sell electronics, machinery, vehicles, aerospace parts, industrial equipment, coatings, adhesives, lubricants, or plastic components
Manage spare parts, replacement parts, repair parts, or legacy inventory
Collect supplier declarations, SDS files, material data, and compliance evidence

Which PBT Chemicals Are Regulated Under TSCA Section 6(h)?

EPA issued rules for five PBT chemicals under TSCA Section 6(h). These substances may appear in different supply chains, materials, and technical applications.

PBT Chemical	Common Business Relevance	Why Companies Should Check
Decabromodiphenyl ether, known as decaBDE	Flame retardant historically used in certain plastics, textiles, wire and cable insulation, electronics, aerospace, and automotive applications	May be relevant to plastic parts, electronics, vehicles, aerospace parts, recycled plastics, and legacy components
Phenol, isopropylated phosphate (3:1), known as PIP (3:1)	Plasticizer, flame retardant, anti-wear additive, and additive in lubricants, hydraulic fluids, coatings, adhesives, sealants, and plastic articles	High relevance for electronics, machinery, industrial equipment, lubricants, coatings, vehicles, and replacement parts
2,4,6-Tris(tert-butyl)phenol, known as 2,4,6-TTBP	Fuel-related additives, oils, lubricants, and maintenance applications	Relevant for fuel additives, lubricant products, and machinery maintenance supply chains
Hexachlorobutadiene, known as HCBD	Byproduct associated with certain chlorinated hydrocarbon manufacturing and waste fuel uses	Relevant for chemical manufacturers, processors, and waste-related activities
Pentachlorothiophenol, known as PCTP	Historically used in rubber manufacturing	Relevant for rubber materials and industrial rubber supply chains

EPA provides use and risk-management information for the five PBT chemicals regulated under TSCA Section 6(h).

Am I Affected by TSCA Section 6(h)?

Your company may be affected if you manufacture, import, process, distribute, or sell products in the U.S. market that may contain any of the five PBT chemicals.

This is especially important if your product portfolio includes:

Electrical and electronic equipment
Circuit boards, wire harnesses, cables, or connectors
Industrial machinery and manufacturing equipment
Automotive or heavy machinery parts
Aerospace parts or replacement parts
HVAC, refrigeration, water-heating, laboratory, or power-generating equipment
Plastic components or flame-retarded materials
Coatings, adhesives, sealants, lubricants, greases, or hydraulic fluids
Rubber materials or industrial rubber products
Spare parts, repair parts, replacement parts, or legacy stock
Imported articles or components from multi-tier suppliers

A company does not need to be a chemical manufacturer to have TSCA Section 6(h) exposure. Importers, distributors, brand owners, and finished-goods manufacturers may also need to collect and verify supplier evidence.

Key Update 1: 0.1% Threshold for Unintentional Presence

EPA’s 2024 final rule established a 0.1% by weight threshold for unintentional presence of decaBDE and PIP (3:1) in products and articles.

This is important for companies managing complex supply chains where trace contamination may occur. However, the threshold should not be misunderstood. It does not create a general allowance for intentional use of decaBDE or PIP (3:1) in non-excluded products or articles.

For complex assemblies, companies should assess article-level compliance carefully. A small component may create a compliance issue even if the full finished product appears compliant by total product weight.

Key Update 2: October 31, 2026 Deadline for PIP (3:1)-Containing Articles

PIP (3:1) remains one of the most important TSCA Section 6(h) substances for product compliance teams.

Under 40 CFR Part 751, after October 31, 2024, processing and distribution of PIP (3:1) for use in articles and processing of PIP (3:1)-containing articles are prohibited, unless an exclusion or specific phase-out applies. After October 31, 2026, distribution in commerce of PIP (3:1)-containing articles is prohibited, unless otherwise excluded or subject to a later compliance date.

This makes the 2026 deadline especially relevant for companies managing:

Imported articles
Electronic components
Industrial equipment
Commercial equipment
Customer-facing products
Replacement parts
Legacy inventory
Products with uncertain supplier data

Key Update 3: Later Phase-Out Dates for Specific Uses

Not all PIP (3:1) uses have the same compliance date. The current rule includes later dates for specific categories, including certain lubricants and greases, motor vehicle parts, aerospace parts, marine antifouling coatings, new manufacturing equipment, HVAC and refrigeration equipment, power-generating equipment, laboratory equipment, commercial electronic equipment, and replacement parts.

This means companies should not manage TSCA Section 6(h) using one general deadline. Compliance depends on:

Substance
Product type
Article category
Use case
Whether the substance is intentionally added
Whether the presence is unintentional
Whether an exclusion applies
Whether a later phase-out date applies

Key Update 4: SDS and Label Communication for PIP (3:1)

Downstream notification is another critical compliance area.

EPA’s 2024 final rule includes downstream notification requirements for PIP (3:1) and PIP (3:1)-containing products, including notification through the Safety Data Sheet or product label, depending on the situation and deadline.

Companies should now review whether SDS files, labels, supplier communications, and customer-facing documents are aligned with the applicable TSCA Section 6(h) requirements.

What Documents and Data Do Companies Need?

A potential TSCA Section 6(h) compliance file should be more than a basic supplier statement. Companies should prepare structured, traceable evidence that supports each product compliance decision.

Required Data or Document	Why It Matters
Product list and U.S. market scope	Identifies which products, articles, or materials need review
Bill of materials or article structure	Supports article-level assessment instead of only finished-product review
Supplier declarations	Confirms whether suppliers report restricted PBT substances
Full material disclosures, where available	Helps identify substance presence beyond generic declarations
SDS files	Supports chemical, mixture, and downstream notification review
Substance concentration data	Helps assess thresholds and potential restriction status
Test reports, where needed	Supports higher-risk or uncertain cases
Exemption or phase-out justification	Documents why a product may still be allowed under a specific rule provision
Import and distribution records	Supports U.S. market access and enforcement readiness
Version history	Shows when product data, supplier declarations, or compliance conclusions changed

Practical TSCA Section 6(h) Compliance Checklist

To prepare for TSCA Section 6(h), companies should follow a structured process.

1. Map products and articles in scope

Identify all products, components, materials, mixtures, spare parts, and imported articles placed on the U.S. market.

2. Screen for the five PBT chemicals

Review whether any products, materials, or supplier declarations reference decaBDE, PIP (3:1), 2,4,6-TTBP, HCBD, or PCTP.

3. Prioritize high-risk product categories

Focus first on electronics, plastic components, wire and cable materials, flame-retarded materials, lubricants, greases, coatings, adhesives, sealants, vehicles, aerospace parts, industrial equipment, and replacement parts.

4. Request structured supplier declarations

Ask suppliers for substance-specific declarations. Avoid relying only on broad statements such as “TSCA compliant” unless they clearly identify the regulation, product scope, substances reviewed, date, responsible party, and supporting evidence.

5. Review intentional use vs unintentional presence

For decaBDE and PIP (3:1), the 0.1% threshold applies to unintentional presence. Intentional use in non-excluded products or articles should be assessed separately.

6. Check exclusions and phase-out dates

Confirm whether a product is prohibited, excluded, or subject to a later compliance date. Document the reasoning.

7. Update SDS, labels, and customer communication

Review whether required downstream communication is reflected in SDS files, labels, supplier documents, and customer-facing compliance information.

8. Maintain records for audit readiness

Keep supplier declarations, SDS files, test reports, exemption assessments, concentration evidence, and product version history in a controlled system.

Common TSCA Section 6(h) Compliance Mistakes

Mistake 1: Assuming finished goods are not affected

TSCA Section 6(h) can affect products and articles, not only raw chemicals. Finished goods with complex components may still require supplier and material review.

Mistake 2: Reviewing only direct suppliers

Restricted substances may originate from deeper supply-chain tiers. Companies should request evidence from suppliers that is specific enough to support product-level decisions.

Mistake 3: Using generic compliance statements

A declaration that simply says “compliant” may not be strong enough. Companies should look for substance names, product references, concentration information where relevant, regulation scope, date, and responsible supplier information.

Mistake 4: Missing the 2026 PIP (3:1) distribution deadline

The October 31, 2026 deadline is important for companies that distribute PIP (3:1)-containing articles, unless an exclusion or later compliance date applies.

Mistake 5: Not documenting exemptions or phase-outs

If a company relies on an exclusion or delayed phase-out date, the reasoning should be documented and connected to the product, article, supplier evidence, and applicable regulatory provision.

Why TSCA Section 6(h) Is Difficult to Manage Manually

TSCA Section 6(h) creates a practical data problem because compliance information is usually spread across multiple teams and systems.

Product data may sit with engineering. Supplier declarations may sit with procurement. SDS files may sit with EHS. Import documents may sit with logistics. Customer declarations may sit with sales or quality teams.

When this information is managed through spreadsheets, email folders, and disconnected files, companies may face:

Missing supplier evidence
Outdated SDS files
Unclear article-level compliance status
Weak supplier declarations
Untracked exemptions
Missed deadlines
Inconsistent customer responses
Higher audit and enforcement risk

A structured digital approach helps compliance teams move from reactive document collection to proactive product compliance control.

How ComplyMarket Product Compliance Software Can Help

ComplyMarket helps companies manage product compliance obligations, supplier data, documentation, and regulatory evidence in a more structured and traceable way. ComplyMarket describes its Product Compliance Management Software as a centralized platform for managing regulatory obligations for manufacturers, importers, and product managers.

For TSCA Section 6(h), ComplyMarket can support companies in several practical ways.

1. Centralize TSCA Section 6(h) obligations

Companies can manage applicable regulations, restricted substances, deadlines, product scope, and documentation requirements in one organized compliance system.

This helps teams avoid relying on scattered spreadsheets and disconnected files.

2. Connect regulations to products, materials, and suppliers

TSCA Section 6(h) compliance depends on knowing which products, components, materials, or articles may contain restricted PBT chemicals.

ComplyMarket supports material compliance management and supplier engagement, helping companies collect and organize compliance and sustainability information from suppliers.

3. Manage supplier declarations more effectively

Supplier declarations are a critical part of TSCA Section 6(h) compliance. ComplyMarket’s Supplier Declaration Analyzer supports structured review of supplier declaration reliability, including observations, impact analysis, and overall assessment.

This helps companies identify incomplete, outdated, or weak supplier evidence before it becomes a compliance risk.

4. Track documentation and evidence

ComplyMarket helps companies manage regulatory documentation, supplier compliance, and evidence within the portal.

For TSCA Section 6(h), this can include supplier declarations, SDS files, material data, exemption assessments, test reports, and product-level compliance records.

5. Support audit readiness and customer response

When customers, authorities, or internal stakeholders request evidence, companies need a clear answer supported by traceable documentation.

ComplyMarket helps create a more controlled compliance process by connecting product data, supplier information, regulatory obligations, and supporting evidence in one platform.

FAQ: TSCA Section 6(h) Compliance

What is TSCA Section 6(h)?

TSCA Section 6(h) is a provision of the Toxic Substances Control Act that requires EPA to take action on certain persistent, bioaccumulative, and toxic chemicals to reduce exposure to the extent practicable.

Which chemicals are covered?

The five PBT chemicals covered by EPA rules under TSCA Section 6(h) are decaBDE, PIP (3:1), 2,4,6-TTBP, HCBD, and PCTP.

Is PIP (3:1) still important in 2026?

Yes. October 31, 2026 is a key deadline for distribution in commerce of PIP (3:1)-containing articles, unless an exclusion or later compliance date applies.

Does TSCA Section 6(h) apply to imported articles?

It can. Importers should assess whether imported products, components, materials, or articles contain restricted PBT chemicals and whether TSCA obligations apply.

Is a supplier declaration enough?

A supplier declaration can be useful, but it should be specific, current, and supported by reliable evidence. Strong declarations should identify the regulation, substance scope, product or part covered, concentration information where relevant, date, responsible supplier, and supporting documents.

What is the main business risk?

The main risk is not only the presence of restricted substances. It is also the inability to prove compliance because supplier data, SDS files, material information, exemption decisions, and product evidence are incomplete or not traceable.